/* 少妇 - 原创主题样式 */
/* 配色方案：玫瑰粉 #FF4D8D / 深玫红 #C2185B / 浅粉 #FCE4EC / 暗色背景 #1A1A2E / 卡片背景 #16213E */

:root {
  --primary: #FF4D8D;
  --primary-dark: #C2185B;
  --primary-light: #FF80AB;
  --accent: #FF6B35;
  --accent2: #9C27B0;
  --bg-dark: #0F0F1A;
  --bg-card: #1A1A2E;
  --bg-card2: #16213E;
  --text-main: #F5F5F5;
  --text-sub: #B0B0C0;
  --text-muted: #707080;
  --border: rgba(255,77,141,0.25);
  --shadow: 0 4px 24px rgba(255,77,141,0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-light); }

img { max-width: 100%; height: auto; display: block; }

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: linear-gradient(90deg, var(--primary-dark), var(--accent2), var(--primary));
  color: #fff;
  text-align: center;
  padding: 6px 20px;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.top-bar a { color: #fff; font-weight: 600; }

/* ===== 导航栏 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,15,26,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 64px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo img.favicon { width: 32px; height: 32px; border-radius: 6px; }
.nav-logo img.logo-img { height: 38px; width: auto; }
.nav-logo .brand-name {
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  list-style: none;
  flex-wrap: wrap;
}
.nav-links li a {
  display: block;
  padding: 6px 12px;
  color: var(--text-sub);
  font-size: 14px;
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-links li a:hover,
.nav-links li a.active {
  color: var(--primary);
  background: rgba(255,77,141,0.1);
}
.nav-search {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 6px 14px;
  gap: 8px;
  min-width: 200px;
}
.nav-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
  width: 140px;
}
.nav-search input::placeholder { color: var(--text-muted); }
.nav-search button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--primary);
  font-size: 16px;
  padding: 0;
  line-height: 1;
}
.nav-actions { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }
.btn-login {
  padding: 7px 18px;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-login:hover { background: var(--primary); color: #fff; }
.btn-join {
  padding: 7px 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 2px 12px rgba(255,77,141,0.4);
  transition: all var(--transition);
}
.btn-join:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(255,77,141,0.5); color: #fff; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all var(--transition); }

/* ===== 搜索框下方条 ===== */
.search-bar-section {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-bar-main {
  display: flex;
  flex: 1;
  max-width: 600px;
  background: var(--bg-dark);
  border: 1.5px solid var(--border);
  border-radius: 30px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.search-bar-main:focus-within { border-color: var(--primary); }
.search-bar-main input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: 10px 18px;
  color: var(--text-main);
  font-size: 15px;
}
.search-bar-main input::placeholder { color: var(--text-muted); }
.search-bar-main button {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  color: #fff;
  padding: 10px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  transition: opacity var(--transition);
}
.search-bar-main button:hover { opacity: 0.9; }
.search-hot-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.search-hot-tags span { color: var(--text-muted); font-size: 13px; }
.search-hot-tags a {
  font-size: 12px;
  padding: 3px 10px;
  background: rgba(255,77,141,0.1);
  border: 1px solid rgba(255,77,141,0.2);
  border-radius: 12px;
  color: var(--text-sub);
  transition: all var(--transition);
}
.search-hot-tags a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== 通用容器 ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.section { padding: 60px 0; }
.section-sm { padding: 40px 0; }

/* ===== 区块标题 ===== */
.section-header { text-align: center; margin-bottom: 40px; }
.section-header h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-header p { color: var(--text-sub); font-size: 15px; max-width: 600px; margin: 0 auto; }
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0F0F1A 0%, #1A0A2E 50%, #0F0F1A 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner_hero.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  filter: blur(1px);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,15,26,0.92) 0%, rgba(15,15,26,0.5) 60%, rgba(15,15,26,0.2) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 20px;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,77,141,0.15);
  border: 1px solid rgba(255,77,141,0.4);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 13px;
  color: var(--primary-light);
  margin-bottom: 20px;
}
.hero-badge::before { content: '●'; color: var(--primary); font-size: 8px; animation: blink 1.5s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero h1 {
  font-size: clamp(32px, 5vw, 64px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
}
.hero h1 .brand { color: var(--primary); }
.hero h1 .sub { display: block; font-size: 0.55em; color: var(--text-sub); font-weight: 400; margin-top: 8px; }
.hero-desc { font-size: 16px; color: var(--text-sub); max-width: 500px; margin-bottom: 32px; line-height: 1.8; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(255,77,141,0.45);
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 28px rgba(255,77,141,0.55); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border: 1.5px solid rgba(255,255,255,0.3);
  color: #fff;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  background: rgba(255,255,255,0.05);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: rgba(255,77,141,0.08); }
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  display: block;
}
.hero-stat .label { font-size: 12px; color: var(--text-muted); }

/* ===== 视频卡片网格 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-card2);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.video-play-btn svg {
  width: 56px;
  height: 56px;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.5));
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-meta .author { display: flex; align-items: center; gap: 5px; }
.video-meta .author img { width: 20px; height: 20px; border-radius: 50%; object-fit: cover; }
.video-stats { display: flex; gap: 10px; margin-top: 6px; font-size: 12px; color: var(--text-muted); }
.video-stats span { display: flex; align-items: center; gap: 3px; }

/* ===== 分类标签栏 ===== */
.category-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  margin-bottom: 24px;
  scrollbar-width: none;
}
.category-tabs::-webkit-scrollbar { display: none; }
.cat-tab {
  flex-shrink: 0;
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  color: var(--text-sub);
  background: var(--bg-card);
  transition: all var(--transition);
  white-space: nowrap;
}
.cat-tab:hover, .cat-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary); }
.expert-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 3px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(255,77,141,0.15);
}
.expert-name { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.expert-title { font-size: 13px; color: var(--primary); margin-bottom: 8px; }
.expert-desc { font-size: 13px; color: var(--text-sub); line-height: 1.6; margin-bottom: 14px; }
.expert-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 16px; }
.expert-tag {
  font-size: 11px;
  padding: 3px 10px;
  background: rgba(255,77,141,0.1);
  border: 1px solid rgba(255,77,141,0.2);
  border-radius: 10px;
  color: var(--primary-light);
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 6px 14px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}
.btn-sm-primary { background: var(--primary); color: #fff; border: none; }
.btn-sm-primary:hover { background: var(--primary-dark); }
.btn-sm-outline { border: 1px solid var(--border); color: var(--text-sub); background: none; }
.btn-sm-outline:hover { border-color: var(--primary); color: var(--primary); }

/* ===== 用户评价 ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.review-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; border: 2px solid var(--primary); }
.review-user-info .name { font-size: 14px; font-weight: 700; }
.review-user-info .date { font-size: 12px; color: var(--text-muted); }
.review-stars { color: #FFD700; font-size: 14px; margin-bottom: 8px; }
.review-text { font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--primary); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  user-select: none;
}
.faq-question .icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255,77,141,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
  padding: 0 22px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 22px 18px; }

/* ===== 合作品牌Logo墙 ===== */
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-logo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-sub);
  transition: all var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-logo:hover { border-color: var(--primary); color: var(--primary); }

/* ===== 联系信息 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}
.contact-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.contact-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 24px;
}
.contact-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.contact-card p { font-size: 14px; color: var(--text-sub); }
.qr-code {
  width: 120px;
  height: 120px;
  margin: 12px auto 0;
  border-radius: 8px;
  border: 2px solid var(--border);
  object-fit: cover;
}

/* ===== 社交分享 ===== */
.share-btns { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  color: #fff;
}
.share-wechat { background: #07C160; }
.share-weibo { background: #E6162D; }
.share-douyin { background: #010101; border: 1px solid #333; }
.share-bilibili { background: #00A1D6; }
.share-btn:hover { opacity: 0.85; transform: translateY(-1px); }

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 50px 20px 20px;
}
.footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand .logo-wrap img { height: 36px; }
.footer-brand .logo-wrap span {
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all var(--transition);
  color: var(--text-sub);
}
.footer-social a:hover { border-color: var(--primary); color: var(--primary); }
.footer-col h4 { font-size: 14px; font-weight: 700; margin-bottom: 16px; color: var(--text-main); }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary); }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 14px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb-inner a { color: var(--text-muted); }
.breadcrumb-inner a:hover { color: var(--primary); }
.breadcrumb-inner .sep { color: var(--text-muted); }
.breadcrumb-inner .current { color: var(--text-main); }

/* ===== 视频播放器页面 ===== */
.video-player-wrap {
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/9;
  width: 100%;
}
.video-player-wrap video, .video-player-wrap iframe {
  width: 100%;
  height: 100%;
  border: none;
}
.video-detail-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 24px;
  align-items: start;
}
.video-detail-info { margin-top: 16px; }
.video-detail-title { font-size: 20px; font-weight: 800; margin-bottom: 10px; }
.video-detail-meta { display: flex; gap: 16px; font-size: 13px; color: var(--text-muted); margin-bottom: 14px; flex-wrap: wrap; }
.video-detail-desc { font-size: 14px; color: var(--text-sub); line-height: 1.8; }
.video-action-btns { display: flex; gap: 10px; margin: 16px 0; flex-wrap: wrap; }
.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-sub);
  transition: all var(--transition);
}
.action-btn:hover, .action-btn.liked { border-color: var(--primary); color: var(--primary); background: rgba(255,77,141,0.08); }
.sidebar-related h3 { font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.related-item {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  cursor: pointer;
  transition: opacity var(--transition);
}
.related-item:hover { opacity: 0.8; }
.related-thumb { width: 120px; height: 68px; border-radius: 8px; object-fit: cover; flex-shrink: 0; }
.related-info .title { font-size: 13px; font-weight: 600; line-height: 1.4; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-info .meta { font-size: 12px; color: var(--text-muted); }

/* ===== AI赋能模块 ===== */
.ai-features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.ai-feature-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(156,39,176,0.1) 100%);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  border: 1px solid rgba(156,39,176,0.2);
  text-align: center;
  transition: all var(--transition);
}
.ai-feature-card:hover { transform: translateY(-4px); box-shadow: 0 4px 24px rgba(156,39,176,0.25); border-color: var(--accent2); }
.ai-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}
.ai-feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--primary-light); }
.ai-feature-card p { font-size: 13px; color: var(--text-sub); line-height: 1.7; }

/* ===== 直播入口 ===== */
.live-banner {
  background: linear-gradient(135deg, #1A0A2E, #2D0A3E);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(255,77,141,0.3);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #E6162D;
  color: #fff;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
}
.live-badge::before { content: '●'; font-size: 8px; animation: blink 1s infinite; }
.live-info h2 { font-size: 24px; font-weight: 800; margin-bottom: 8px; }
.live-info p { font-size: 14px; color: var(--text-sub); }
.live-avatars { display: flex; margin-top: 12px; }
.live-avatars img { width: 36px; height: 36px; border-radius: 50%; border: 2px solid var(--bg-dark); margin-right: -8px; object-fit: cover; }

/* ===== 加入社区How-To ===== */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.howto-step {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  border: 1px solid var(--border);
  text-align: center;
  position: relative;
  counter-increment: step;
  transition: all var(--transition);
}
.howto-step:hover { border-color: var(--primary); }
.howto-step::before {
  content: counter(step);
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  color: #fff;
}
.howto-step .step-icon { font-size: 32px; margin-bottom: 12px; display: block; }
.howto-step h3 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.howto-step p { font-size: 13px; color: var(--text-sub); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .video-detail-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg-card); padding: 16px; border-bottom: 1px solid var(--border); z-index: 999; }
  .hamburger { display: flex; }
  .nav-search { display: none; }
  .hero { min-height: 400px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { gap: 20px; }
  .search-hot-tags { display: none; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
}

/* ===== 懒加载占位 ===== */
img[data-src] { background: var(--bg-card2); min-height: 60px; }

/* ===== 动画 ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeInUp 0.6s ease both; }
.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }

/* ===== 滚动进入动画 ===== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== 页面加载进度条 ===== */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent2));
  z-index: 9999;
  transition: width 0.3s ease;
}

/* ===== 回到顶部 ===== */
#back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(255,77,141,0.4);
  z-index: 500;
  border: none;
}
#back-top.show { opacity: 1; transform: translateY(0); }
#back-top:hover { background: var(--primary-dark); }

/* ===== 弹幕容器 ===== */
.danmu-wrap {
  position: relative;
  overflow: hidden;
  height: 40px;
  background: rgba(0,0,0,0.3);
  border-radius: 20px;
  margin-bottom: 20px;
}
.danmu-track {
  display: flex;
  animation: danmu-scroll 20s linear infinite;
  white-space: nowrap;
  align-items: center;
  height: 100%;
  padding: 0 20px;
  gap: 40px;
}
.danmu-track span { font-size: 13px; color: rgba(255,255,255,0.7); flex-shrink: 0; }
@keyframes danmu-scroll {
  from { transform: translateX(100%); }
  to { transform: translateX(-100%); }
}

/* ===== 标签云 ===== */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-item {
  padding: 5px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  font-size: 13px;
  color: var(--text-sub);
  transition: all var(--transition);
  cursor: pointer;
}
.tag-item:hover { background: var(--primary); border-color: var(--primary); color: #fff; }